Unlock instant, AI-driven research and patent intelligence for your innovation.

Steering wheel

a steering wheel and rim technology, applied in the direction of mechanical control devices, process and machine control, instruments, etc., can solve the problems of large development cost, long study period, and inconvenient seat occupants

Inactive Publication Date: 2002-02-28
NIHON PLAST CO LTD
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the thus caused maximum vibration, the seat occupant feels uncomfortable who grips the steering wheel for steering operation.
Moreover, disposing the weight at the rim portion or at a boss portion is of difficulty due to the need for uniform and soft touch feeling circumferentially along the rim portion during operation of the steering wheel, and need for bringing about a preferable design of the steering wheel.
Quite a lot of prototypes and repeated experiments are required for obtaining a design having excellent compatibility of deformation and vibration, causing a huge amount of development cost as well as a long study period.
However, the partially combined weight of the rim portion is not practical since it involves a lot of potential technical problems to be solved.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Steering wheel
  • Steering wheel
  • Steering wheel

Examples

Experimental program
Comparison scheme
Effect test

second embodiment

[0103] Described below is the weight W, according to the present invention.

[0104] The weight receptacle B of the core metal 11 can partially have a separate member. More specifically, as is seen in FIG. 7, an insert 81 made of hard resin can be fixed and disposed on the upper shell 21 of the weight receptacle B. According to the second embodiment, the weight W is a rod thinner than the weight W according to the first embodiment in FIG. 4. The weight W in FIG. 7 abuts on the core metal 11 directly and by way of the insert 81, so as to adjust vibration characteristic.

third embodiment

[0105] Described below is the weight W, according to the present invention.

[0106] Configuration of the weight W is not limited to the one along the internal surface of the weight receptacle B. More specifically, as is seen in FIG. 8, there is provided the weight W having substantially a zigzag {or triangular (undulating)} configuration formed with predetermined abutments W3. The abutments W3 abut on an upper internal wall and a lower internal wall of the weight receptacle B at predetermined strokes. Instead of being zigzag, the weight W can be rectangular (undulating), curved (undulating) and the like.

fourth embodiment

[0107] Described below is the weight W, according to the present invention.

[0108] The weight W is constituted of a plurality of weight bodies W1. As is seen in FIG. 9, two weight bodies W1, each of which shaped into a round rod, are bound by the cover member W2 (also acts as a binder) at a plurality of binding portions in the longitudinal direction so as to constitute the weight W. For example, such binding portions include the center, the right end and the left end of the weight body W1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A steering wheel has a core metal, a receptacle, and a weight. The core metal has a boss core metal connected to a steering shaft; a rim core metal; and a spoke core metal connecting the boss core metal and the rim core metal. The receptacle is disposed in the rim core metal. The receptacle is hollow and has an internal wall portion. The weight is movably received in the receptacle, and is allowed to impinge on the internal wall portion of the receptacle.

Description

[0001] 1. FIELD OF THE INVENTION[0002] The present invention relates to a steering wheel having a weight (act as a damper) for improving vibration characteristics.[0003] 2. DESCRIPTION OF THE RELATED ART[0004] Conventionally, a steering wheel for steering a motor vehicle and the like receives a vibration caused by engine revolution or a vibration transmitted from the road surface during vehicle travel. The steering wheel is fixed to an end of a steering shaft facing a seat occupant (driver), and is vibrated by the vibration which is thus caused or transmitted. Natural frequency of the steering wheel equaling frequency of the vibrations above exhibits the maximum vibration point (namely, resonance), to thereby vibrate the steering wheel intensely. Due to the thus caused maximum vibration, the seat occupant feels uncomfortable who grips the steering wheel for steering operation.[0005] Japanese Utility Model Unexamined Publication No. Showa 62(1987)-64675 and Japanese Utility Model Une...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B62D1/06B62D1/04B62D1/11B62D7/22F16F15/02
CPCY10T74/20834B62D7/222
Inventor OCHIAI, MIKIOSUGIYAMA, TOSHIYUKISATO, IZUMISUZUKI, SHINYA
Owner NIHON PLAST CO LTD